Pipe clamp



Patented Jan. I, 1924.

tirant RALPH S. PEIRCE, OF HINSDALE, ILLINOIS.

'PIPE CLAMP.

Application led October 11, 1920. Serial No. 416,166.

T0 a-ZZ LU/tom t may concern.

Be it known that I, RALPH S. Pinnen, citizen of the United States, residing at Hinsdale, in the county of Du Page and State of Illinois, have invented a certain new and useful Improvement in Pipe Clamps, of which the following is a full, clear, concise, and exact description. v

My invention relates to clamps which may be disposed about cylindrical objects such as water hose and other piping.

The invention has for one. of its objectsv an improved form of clamp which maybe used exclusively for the mechanical purpose of clamping and the invention has for another of its objects such a construction of the clamp that it may be effectively employed as a grounding clamp for electrically connecting circuit wiring with metallic piping.

The clamp of my invention employs an open circular band and a bridge piece having a laterally extending portion, there being also clamping means for assembling the ends of the band with the laterally extending portion of the bridge piece. My invention enables me to employ very thin metal for the band, the bridge piece itself being preferably of rigid formation where it engages the piping although the lateral eXtension of the bridge piece is preferably of U- form and somewhat resilient to enable the clamping bolt or other clamping means more readily to assemble the band and the bridge piece and also enabling the clamping of circuit wiring if the clamp is to be used for grounding the same.

I will explain my invention more fully by reference to the accompanying drawing showing the preferred embodiment thereof and in which Fig. l is a perspective view of a clamp; 2 is a cross sectional view thereof; andlig. 3 is a perspective view of the component elements of the clamp in separated relation, the band being shown in the shape which it initially possesses before being clamped into position.

Like parts are indicated by similar characters of reference throughout the different figures.

The rigid metallic bridge piece has an arcuate portion l interposed between the metallic band 2 and the piping or other cylindrical object 3 to which the clamp is to be applied, the bridge piece being preferably formed of thick metal so as to make lit sub- ,y with the bridge piece and its other end directly free of the bridge piece. The circular band has two lateral extensions 5 and G, the lateral extension 5 having a. single bolt hole 7, a row of bolt holes 8 being arranged along the band at its other end, any of the latter bolt holes being adapted to be made complemental to the bolt hole 7 according to the size of the pipe surrounded by the band. Both sides of the U-shaped portion e are provided with aligned bolt holes 9. l/Vliere the extension 4 is' of U-form the extension is disposed between the sides thereof and the extension Gis placed against the outer face of the side of the U-portion that is directly joined with the arcuate portion of the bridge piece. When the threaded shank of the metallic bolt l() is passed through the holes 7 and 9 and the selected hole 8 in the band 2, the metallic bolt is turned to advance the nut 1l along the bolt stem toward the bolt head until the band 2 is brought to its final circular shape illustrated in Fig. 2.

The excess metal beyond the selected hole 8 in the band 2 mak be removed by breakage as illustrated at 12 in F ig. l.

lVhere the clamp is to be employed as a 'grounding clamp a current conducting wire 13 may be located in the bight of the U- shaped extension of the bridge piece, the bolt l0 serving to grip this wire between the sides of said U-shaped extension. A current conductor le, that may be either directly connected with the conductor 13 er otherwise electrically associated, may be clamped between the metallic band and the free end of the Lbshaped extension of the bridge piece as illustrated in I? 2. In order that the engagen'ient between the band extension 5 and the bridge piece extension si may not be impaired when a conductor 14C is clamped as illustrated, the free end of the U-shaped extension may be angularly deiiected away from the opposite side of the'U-shaped eX- tension as illustrated at l5. his angular deflection may be of any shape desired, the shape illustrated conforming to the curvature of the wire that is clamped between it and the corner that is formed by the circular portion of the band 2 and the. extension lVhile I have herein shown and particularly described the preferred embodiment ot iny invention I do not wish to be limited to the precise details of Construction shown as changes may readily' be inade without departing4 from the spirit of my invention, but having thus described niy invention I claiin as new and desire to secure by Letters Pat ent the followingwj l. In a cla1npy the combination with a bridge piece having an arcuate portion and a laterally extending outwardly projecting extension of U-shape joined at one end with one end of the arcuate portion of the bridge piece; ot' a circular band having two lateral outwardly projecting extensions, one between the sides ot the U'portion and the other overlying the arcuate bridge portion; and a clamping bolt passing through passages that are fornied in the lateral extensions ot said band' and bridge piece, the tree end ot the U-slaped extension having an angular continuation for the attachment of Wire thereto.

In a clamp, the combination with a bridge piece having an arcuate portion and a laterally extendingV outwardly' projecting extension of Uf-shape joined at one end with one end of the arcuate portion of the bridge piece; of a circular band having two lateral outwardly projectingextensions` one between the sides of the U-portion and the other overlying the arcuate bridge portion; and a clamping bolt passing through passages that are formed in the lateral eXtensions ot' said band and bridge piece.

3. In a clamp, the combination with a bridge piece havingI an arcuate portion and a laterally extending outwardly projecting extension ot U-shape joined at one end with one end' ot the arcr-iate'portion ot the bridge'r piece; ot a circular band having two lateral outward-ly proj eating. extensions,one between the sides ot' the U-porton. and the other overlyingthe arcuate bridge portion; and a clamping bolt passiifigthrough passages thatare formed in. the lateraly extensions ot said band and bridge piece, said band having one bolt hole in one of its ends and a row of bolt openings arranged along the band at its other end.

In witnessv whereof, I heren-nto subscribe my naine this eighth day oit October', A. D..4

RALPH S. PEIRGE. 

